Tuck-marker



(Model.)

A. JOHNSTON.

vTUGK MARKER.

No. 307,?21. Patented Nov. 4, 18814.

UniTinn STATns PATENT @Tricia- ALLEN JOHNSTON, OF OTTUMVA, IOVA.`

TUClfllVlARKER.

SPECIFICATION forming part of Letters Patent No. 307,721, dated November 4, 1884.

Application filed February 12, 18S-i. (Model.)

arm. Fig. 3 is a cross-section on line 3 3 of Fig. l. Fig. t is a cross-section on linea 4 of Fig. l. Fig. 5 is an end view showing the rocking notch and creasing-blade. Fig. (iis a cross-section on line G6 of Fig. l, andFig. 7 is a bottom view of the bedplate.

rlhe invention consists in the novel construction and novel means of combining the various parts or elements composing the device, wliercby I produce a cheaper, more durable, and efficient tuck-marker.

In the drawings, A represents thespringarm; B, the marker-plate carrying the blade b,- @,the

gage-plate; D, the flat springarm carrying the rocking notch d,- F, the bed-plate, and F the sinoolherfbar. kThe bed-plate E is secu red to the work-plate ofthe machine in the ordinary inanner-that is to say, by a thumb-screw passing through a hole near the center of the bed-plate. The spring-aria A is provided with an eye, a, at its end, formed by bending` the end ot' the wire into a coil; and this spring-arm is secured to the marker by a rivet, c, passing through the eye, and through a suitable hole in the niarker-pla B and inthe spring-arm D, the ends of the plate B and arm D being stamped or set up to Alit the eye, so that each forms a half groove or socket, c, for the coil of the wire, so that the eye a is held firmly clamped between the plate and spring-arm by the rivet, and the ends of the plate B and spring-arm D are slightly extended, as shown at a, so as to embrace the wire and strengthen the same at its point of attachment. y securing the spring-arm in th is way between the plate B and the arm D all liability of the arin to break or become detached at or near its point of attachment is prevented, and it is given a great er degree of elasticity. This means oll securing the end of the spring-arm to the marker is also a very cheap and simple one, as the eye c is formed of a single coil at the end of the wire, and as the half grooves or sockets c2 may be readily formed in the end of the plate and spring-arm by stamping the saine. rIhe bed plate E is made in one piece, and provided at each end with a pair of lips, which are bent or stamped around to forni sleeves or holes e e, which are provided with screw-threads for the adjustingscrews e c', by which the marker` plate andgage-plate are fixed and adjusted in any desired position. For greater convenience in handling the screws c e', the sleeves c e should be turned up atan angle, say, of about thirty degrees, to the bed plate. By this means I provide a hole or bearingin the bed plate for both the adjustingscrews, and at the saine time construct it in one piece of' simple form and capable of being readily made. The roekingnotch or creasing'wheel d is seeui ed to a short curved arm, d', projecting from and preferably integral with the [iat spring-arm D. The creasing-wheel d is secured to this arm by inserting its shank cl2 through an eye, d, formed by curving the arin d into a coil. Over the arm d to which the creasing-wheel is secured another independent and longer arm, d, is placed for the spring-arm A to strike against, the end ot' this latter arin being secured to the ilat spring-aria by rivets (Z5. By fastening the creasing-wheel to an independent piece, as d', and securing over it to the flat spring-arm another independent piece, as d4, for the spring-arm A to strike against, a more secure ihst-ening is provided for the creasingwheel and additional elasticity is furnished, so that thc marker operates :more perfectly and uniformly. The end of the gage-plate C, which carries the guide-lip c, is bent up at c', so as to project over the feed and permit of the vertical and horizontal movements of the feed without striking the plate. By bending the gage-plate in this way so that it inay project over the feed additional convenience in opel'- ating tlie device is afforded, as the guide-lip may be adjusted closer to the needle, and as the projecting end of the gage will thus serve to assist in smoothing the cloth in connection with the smoother-arm F. The smoother arm or plate F is secured to the bed-plate by rivets f. In addition to the rivet ci', which passes IOO through the eye of thelspring-arm A, the flat spring-arm is secured to the marker-plate by l a rivet, a5. The flat spring-arm and the gageplate are provided with graduating-marks s s, by which the marker and gage may be set at any desired adjustment.

In the drawings, G represents a portion of 2 the feed of the sewing-machine, and g is the device by which the spring-arm is connected to the needle-bar.'

In Fig. l I have indicated in dotted lines the l shape ol" the lips-or lugs on the bed-plate before the saine are bent or stamped up to form the threaded sleeve c.

I claiml. In a tuck-marker, the combination, with the marker-plate and flat spring-arm, of the spring-arm provided with au eye at its end einbraeed between the said plate and ilat springarm, and a rivet rigidly securing said parts together, substantially as-speciiied- 2. The spring-arm A, provided with a coil,

a', at its end, by which it may be riveted tothe marker, in combination with marker-plate B and iiat spring-arm D, said marker-plate and ilat spring-arm having grooves c6l therein to fit said coil a, substantially as specied.

3. The combination ofthe marker-plate and gage with the bed-plate provided with the threaded sleeves e e at each end integral therewith, and the set-screws e c', for adjusting the gage andthe marker, substantially as specified.

4. rIhe bed plate inade in one piece and having a threaded sleeve at each end for the setserews, turned up at an angle to the bed-plate, and formed lby curving or bending a pair of i projecting lips into the forinof a sleeve or nut i'or the set-screw, in combination with the marker-plate and gage, substantially as specilied.

ALLEN JOHNSTON. \Vitnesses:

Guo. F. HULL, E. L. KILBv 

